Create A PHP Info File

Outputs a large amount of information about the current state of PHP. This includes information about PHP compilation options and extensions, the PHP version, server information and environment (if compiled as a module), the PHP environment, OS version information, paths, master and local values of configuration options, HTTP headers, and the PHP License.

Basically, a PHP info file displays information about your PHP installation that can be useful to troubleshoot your Magento installation.

To createa the file, open up your favorite text editor and enter the following:

<php><?php phpinfo(); ?></PHP>

Save this file with a .php extension, like phpinfo.php, and save it in a public location in your web hosting account.

You can now view the output of thise file by browsing to the location, e.g.: